Membranosphaera bulluliniformis subsp. sphaerica
From dinoflaj3
subsp. sphaerica (Malyavkina in Samoilovitch and Mtchedlishvili, 1961, p.254–255, pl.84, fig.4) Lentin and Williams, 1973, p.94. Holotype: Samoilovitch and Mtchedlishvili, 1961, pl.84, fig.4. Originally Membranosphaera bulluliniformis forma sphaerica, subsequently (and now) Membranosphaera bulluliniformis subsp. sphaerica. Age: middle Oxfordian–mid Valanginian.
Parent: Membranosphaera bulluliniformis